Fastening for divided wheels.



2 o H 2 0 O D d 6 t n 0 t a P .L L B A, .H s W C 5 .5 M 7 am N FASTENINGFOB DIVIDED WHEELS.

(Applicltion filed Am. 7, 1902.)

(No Model.)

Witnesses: Inventor Attorney us cams Pan co. Pnoraumo. wAsmnurow. o. c.

U lTED STATES PATENT OFFICE.

CHARLES W. SHARTLE, OF MIDDLETOWN, OHIO.

FASTENING FOR DIVIDED WHEELS.

SPECIFICATION forming part of Letters Patent No. 714,955, dated December2, 1902.

Application filed April '7, 1902. Serial No. 101,666. (No modeLi To allwhom it may concern:

Beit known that 1, CHARLES W. SHARTLE, a citizen of the United States,residing at Middletown, Butler county, Ohio, have invented certain newand useful Improvements in Fastenings for Divided Wheels, of which thefollowing is a specification.

It is very common in providing shafts with pulley or gear wheels to formthe wheel in two halves united on a diametrical joint-line, the twohalves of the wheel being firmly secured together upon the shaft.Numerous devices for attaching the wheel-halves together have beencontrived, many of them quite satisfactory under some conditions, butnone of them satisfying some peculiarly-exacting conditions. Thus, forinstance, in electric-railway cars a spur-gear is fast upon the car-axleand driven by a pinion from the motor, the gear being formed in halves,so that it can be applied and removed Without removing the car-wheelsfrom the axle. All ordinary means for securing the two gearhalvestogether are lacking in satisfactory results. The cramped condition ofaffairs prevents satisfactory manipulation of some types of fasteningsused in these gear-wheels, and the peculiar condition of service tendsto rattle them loose, and any loosening of the 'fastenings permitsrelative displacement of the two halves of the gear, under whichcondition the pinion will not act properly upon the gear and damage toboth pinion and gear is quite apt to result.

My present invention relates to an improved means for securing togetherthe two halves of a divided wheel; and the invention will be readilyunderstood from the following description, taken in connection with theaccompanying drawings, in which Figure 1 is a face View of a dividedgear provided with my improved fastenings, the arms at one of thefastenings appearing in vertical longitudinal section; and Fig. 2 avertical transverse section of the gear through one of the fastenings.

In the drawings, 1 indicates one of the halves of the gear 2, the otherhalf; 3, the arms at the diametrical joint between the halves, thesearms being flat and divided, so that each wheel-half is provided withfiat arm-halves at the joint; 4, mortises through the arms 3, onemortise at each side of the of the arm-mortises; 6, a mortise througheach of these links of such linear extent as to present an openingexterior to each face of the double arm; 7, a gib disposed across themortise in each of the mortised links and engaging an exterior face ofthe double arm; 8, a keeper-bar, one for each of the mortised links,disposed within the mortise of the link and extending across andengaging the exterior face of the double arm opposite the face engagedby the gibs 7, and 9 a key, one for each mortised link, driven into themortise of the link between the keeper-bar 8 and the upper end of themortise.

In applying the wheel whose halves are to be preferably doweledtogether, as usual, the two halves are assembled upon the shaft with themortised links in position, the gibs 7 being applied either before orafter the Wheelhalves are assembled. The keeper-bars 8 in straight formare then placed in the mortises, after which the keys are driven, thusfirmly uniting the two wheel-halves. The ends of the keeper-bars at theheads of the keys are then bent up to serve as keepers for the keys, theopposite ends of the keepers bars being provided with bends to engagethe edges of the wheel-arms, these bends of the keeperbars being formedeither before the keeperbars are put in place or after the keys aredriven, as desired. The keys may at any time be more firmly driven andan extra set given to the bends of the keeper-bars. To dissociate theparts, the ends of the keeperbars at the heads of the keys are bent downout of the way, so that the keys maybe backed out. For comparativelysmall wheels it is sufficient to apply one of these fastening devices ateach side of the hub, as indicated in the drawings, the result being aproper tightening of the wheel-halves at the hub and rim.

The device will be found peculiarly efficient and subject to none of theannoying disarrangements and accidents common to ordinary devicesemployed for the purpose.

I claim as my invention In fastenings for divided wheels, thecombination, substantially as set forth, of wheelsections provided withmortised fiat arms at the joint of division, mortised links disposedhub; 5, a link disposed loosely within each in the mortises of the arms,gibs disposed in one end of the mortise of each mortised link andengaging against one face of the jointarms of the Wheel, a keeper-bardisposed in the mortise of each mortised link and engaging the face ofthe joint-arms of the Wheel opposite the face engaged by said gibs, and

a tapering key in the mortise of each mortised link and engaging betweenthe end Walls thereof and said keeper-bars.

CHARLES W. SHARTLE. Witnesses:

W. T. HARRISON, B. HARWITZ.

